External wall insulation in Egham
We cover Egham and nearby Staines for external wall insulation, with the survey, system choice, building control and finish all set out in one written quote.
Homes in and around Egham
Egham is in the TW20 postcode district, about 8 miles from Woking. 6 other towns we cover are within 25 miles.
From Egham we also cover Staines (2 miles away), Ashford in Surrey (4 miles) and Windsor (4 miles).
Whatever the exposure of your street, the details at sills, eaves and the base of the wall are what keep an EWI system dry, and we draw them before work starts.
Nearby towns we cover: Staines (2 miles), Ashford, Surrey (4 miles), Windsor (4 miles), Slough (6 miles), Feltham (6 miles), Sunbury-on-Thames (6 miles).
External wall insulation prices in Egham
Guide prices for external wall insulation in Egham run from about £109 to £175 per square metre installed, depending on system and finish; scaffolding priced per house, with VAT at 0% on homes until 31 March 2027.
Bays, gables, conservatory junctions and narrow side passages take longer than plain walls, so the survey prices your actual house rather than an average.
Popular services in Egham
- EWI installation
- Phenolic EWI
- Wood fibre EWI
- Insulating lime render
- Mineral & silicate render
- Bungalow EWI
- Terraced house EWI
- Flats & low-rise blocks
- Social housing EWI
- EWI repairs
- All 24 services
Rules that apply in Egham
- Building regulations
- Insulating more than half of a wall, or more than a quarter of the whole building envelope, counts as renovating a thermal element under the Building Regulations, so the wall should reach 0.30 W/m²K where that is technically, functionally and economically feasible, and building control must be involved.
- VAT
- Installing insulation in a home is zero-rated for VAT until 31 March 2027, then 5%.
Checked October 2026. Rules change, so we confirm them for your address at survey.
External wall insulation in Egham: questions
How much should I budget for external wall insulation in Egham?
Budget around £109–£175 per square metre of wall for the system and finish, plus scaffolding priced per house. The survey measures your walls in Egham and fixes the total in writing.
Do you cover Staines as well as Egham?
Yes. From Egham we also cover Staines, Ashford in Surrey and Windsor, and the rest of Surrey.
How long will the work take in Egham?
Two to six weeks on site for most houses, depending on size: bungalows are quicker, detached houses longer, weather allowing. Render isn't applied in rain or frost.